# Kong CloudFormation - Concurrent Migrations

**URL:** <https://discuss.konghq.com/t/kong-cloudformation-concurrent-migrations/824>\
**Category:** Questions\
**Created:** [April 11, 2018, 5:50pm UTC](https://discuss.konghq.com/t/kong-cloudformation-concurrent-migrations/824 "2018-04-11T17:50:50Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![dprebs](https://avatars.discourse-cdn.com/v4/letter/d/c2a13f/32.png) [@dprebs](https://discuss.konghq.com/u/dprebs)\
**Post date:** [April 11, 2018, 5:50pm UTC](https://discuss.konghq.com/t/kong-cloudformation-concurrent-migrations/824/1 "2018-04-11T17:50:50Z")

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Hi, we are using the provided Kong Cloudformation template to bring up multiple Kong instances for a Kong - Cassandra setup. I have found that if I set kong migrations = true, and set Desired = 2, I will have the first instance run successfully, but the second instance will throw an error due to what seems to be concurrent Kong Migrations. Is there a way we are supposed to be using the template to ensure migrations occur on a single node, or somehow occur on each node in a sequential fashion?